package com.gtmc.gclub.chat.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * 
 * 普通类调用Spring bean对象：
 * 
 * 说明：
 * 
 * 1、此类需要放到App.java同包或者子包下才能被扫描，否则失效。
 * 
 * @author Administrator
 * 
 */

@Component
public class SpringUtil implements ApplicationContextAware {
	private Logger logger = LoggerFactory.getLogger(this.getClass());

	private static ApplicationContext applicationContext = null;

	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

		if (SpringUtil.applicationContext == null) {

			SpringUtil.applicationContext = applicationContext;

		}
		logger.debug(
				"========ApplicationContext配置成功,在普通类可以通过调用SpringUtils.getAppContext()获取applicationContext对象,applicationContext="
						+ SpringUtil.applicationContext + "========");

	}

	// 获取applicationContext
	public static ApplicationContext getApplicationContext() {

		return applicationContext;

	}

	// 通过name获取 Bean.
	public static Object getBean(String name) {

		return getApplicationContext().getBean(name);

	}

	// 通过class获取Bean.
	public static <T> T getBean(Class<T> clazz) {

		return getApplicationContext().getBean(clazz);

	}

	// 通过name,以及Clazz返回指定的Bean
	public static <T> T getBean(String name, Class<T> clazz) {

		return getApplicationContext().getBean(name, clazz);

	}

}
